* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE. * WHERE...PORTIONS OF CENTRAL, EAST CENTRAL, SOUTHEAST, AND WEST CENTRAL ILLINOIS, INCLUDING THE FOLLOWING COUNTIES, IN CENTRAL ILLINOIS, CHRISTIAN, DE WITT, LOGAN, MACON, MARSHALL, MASON, MCLEAN, MENARD, PEORIA, PIATT, SANGAMON, SHELBY, STARK, TAZEWELL AND WOODFORD. IN EAST CENTRAL ILLINOIS, CHAMPAIGN, CLARK, COLES, CUMBERLAND, DOUGLAS, EDGAR, MOULTRIE AND VERMILION. IN SOUTHEAST ILLINOIS, CLAY, CRAWFORD, EFFINGHAM, JASPER, LAWRENCE AND RICHLAND. IN WEST CENTRAL ILLINOIS, CASS, FULTON, KNOX, MORGAN, SCHUYLER AND SCOTT.

* WHEN...FROM 7 AM CDT THIS MORNING THROUGH 1 AM CDT TONIGHT.

* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.

* ADDITIONAL DETAILS... - THUNDERSTORMS WITH HEAVY RAINS OF 2 TO 3 INCHES PER HOUR WILL BE A THREAT AS A WEATHER SYSTEM SLOWLY MOVES INTO IL AND INTERACTS WITH DEEP TROPICAL MOISTURE OVER CENTRAL AND SOUTHEAST IL TODAY AND EVENING. - HTTP: WWW.WEATHER.GOV SAFETY FLOOD